There is no such thing as viruses preferring to infect fat people. Usually the susceptible people of viral infection are immunocompromised, people with chronic diseases, people with autoimmune diseases, and people with malignant tumors. Viral infection refers to the process in which a virus invades the human body, proliferates in the cells of the target organ, and interacts with the body. Clinically there is no such statement that viruses like to infect fat people, which lacks scientific basis. According to the relevant authoritative information, the susceptibility of viral infections is more susceptible to the population, mostly seen in the immunocompromised, considering that there may be a lack of exercise, inadequate intake of nutrients and other conditions. Secondly, viral infections also often occur in people with diabetes, hyperlipidemia, hypertension and other chronic diseases, as well as people with systemic lupus erythematosus, hyperthyroidism, thrombocytopenic purpura and other autoimmune diseases. In addition, patients with malignant tumors are also susceptible to viral infections. When the patient check out the existence of viral infection, need to do further relevant examination, clear the specific cause, with the doctor active treatment.